Suppose that the terminal side of angle alphaα lies in Quadrant I and the terminal side of angle betaβ lies in Quadrant IV. If sine alpha equals five thirteenthssinα= 5 13 and cosine beta equals StartFraction 6 Over StartRoot 85 EndRoot EndFractioncosβ= 6 85, find the exact value of cosine left parenthesis alpha plus beta right parenthesiscos(α+β).

Solution :

It is given that :

lies in the first quadrant.

And lies in the fourth quadrant.

Since,     and    (given)

Similarly  

           (IVth quadrant)

Therefore,

answer is d-29

step-by-step explanation:

since you didn't include the picture, i can give you the description so you know how to pick the correct answer. the third quartile of a data is always shown in a box plot. in the middle of your graph should be a box. the third quartile is the value that goes with the far right edge of the box.